This is a慣らし済み (broken-in) Mach Dash Motor Pro for Mini 4WD. If you purchase multiple motors, you will receive a 200 yen discount for each additional item! Example: 2 items purchased together for a total of 200 yen off, 3 items for a total of 400 yen off. Broken in on the forward rotation side. RPM: 39224rpm No-load current consumption: 1.0A Measurement conditions: Measured after more than 24 hours after breaking in, with the motor's temperature naturally cooled in a place not exposed to sunlight, and after applying a 3V voltage for approximately 30 seconds. The photos are as follows: First photo: Current value Second photo: RPM Third photo: Image of the motor's end bell Please understand that there may be slight variations in the numbers due to the time elapsed since listing, the impact of shipping, and the measurement environment. ※ Based on personal experience, I feel that the break-in condition of the Mach Dash has the following tendencies. (Of course, there are individual differences, so this is just a tendency) You can use this as a reference when considering motors other than mine. • 36000-37000rpm (0.8-0.9A is average) Torque remains a bit, battery consumption is moderate, alkaline batteries run reasonably well if brakes are not applied, and can be used with nickel-hydrogen batteries in layouts that require sudden braking or long distances. • 37000-38000rpm (0.8-1.1A is average) Very fast on flat surfaces, and I feel that the balance of speed, torque, and heat resistance is good in 3-lane high-speed layouts. • 38000-40000rpm (0.9-1.2A is average) While the flat surface becomes even faster, heat fatigue becomes a concern during continuous running, such as from sudden braking and races. It becomes necessary to manage the batteries and, in some cases, to cool the motor. • 40000 or more (I think it will be 1.1A or more) Tends to lose torque, so it will be faster in layouts with shallow braking or long flat surfaces. Also, motors with a no-load current consumption exceeding 1.5A may have excessive current due to initial defects or failures during use. Also, I do not recommend it because there is a possibility of being suspected of doing something at race venues where experienced people gather, and considering the balance of heat generation and power consumption.